#223f5b

Color #223f5b

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 12.47 Nearest Tailwind class slate-700 #314158 · ΔE 3.5

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Conversions

HEX

#223f5b

RGB

rgb(34, 63, 91)

HSL

hsl(209.5, 45.6%, 24.5%)

HSV / HSB

hsv(209.5, 62.6%, 35.7%)

CMYK

cmyk(62.6%, 30.8%, 0%, 64.3%)

LAB

lab(25.71, -1.3, -19.98)

LCH

lch(25.71, 20.02, 266.28)

OKLCH

oklch(35.9%, 0.0602, 249.07)

HWB

hwb(209.5, 13.3%, 64.3%)

Harmony colors

Complementary

#5b3e22

Analogous

#225b5a

#223f5b

#22225b

Triadic

#223f5b

#5b223f

#3f5b22

Split-complementary

#223f5b

#5b2222

#5b5a22

Tetradic

#223f5b

#3e225b

#5b3e22

#3f5b22

Square

#223f5b

#5a225b

#5b3e22

#225b22

Shades

Color #223f5b mixed toward black.

#1c344c

#172a3d

#111f2d

#0b151e

#060a0f

Tints

Color #223f5b mixed toward white.

#335f8a

#4580b8

#739fcb

#a2bfdc

#d0dfee

Tones

Color #223f5b mixed toward gray.

#273f56

#2b3f51

#303f4d

#353f48

#3a3f43

Accessibility

Aa White text on this color

10.88:1

Aa Black text on this color

1.93:1

White text reads better on this background (10.88:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#313155 · ΔE 11.1

Deuteranopia

#2f2d54 · ΔE 11.9

Tritanopia

#24504f · ΔE 17.3

Achromatopsia

#3d3d3d · ΔE 13.8

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #223f5b;

Tailwind (arbitrary value)

bg-[#223f5b]

Related colors

Dodger Blue #1e90ff

Light Slate Gray #778899

Slate Gray #708090

Alice Blue #f0f8ff

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#223f5b (#223f5b) is rgb(34, 63, 91) in RGB.

No, #223f5b is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #223f5b, or check how it holds up for accessibility.

Generate a palette → Check contrast